Rest for dental-engine tools



(No Model.) "2 Sheets-Sheet 1.

G. H. LAND.

BEST FOR DENTAL ENGINE TOOLS.

Patented'Ocfi. 13, 1896.

[firm rm $5M zma waz By afiiomey 11 I ZWESSE S ksu/LZZ X 2 sheets-sheen 2.

(No Model.)

0. H. LAND. BEST FOR DENTAL ENGINE TOOLS.

No. 569,210. Patented 001;. 13, 1896.

ll ITWESSES y B "41, fliiomey NITED STATES PATENT OFFICE.

CHARLES H. LAND, OF DETROIT, MICHIGAN.

REST FOR DENTAL-ENGINE TOOLS.

SPECIFICATION forming part of Letters Patent No. 569,210, dated October 13, 1896.

Application filed August 17, 1895. Se NO- 559J534- (N0 111011813 10 all whom it may concern:

Be it known that 1, CHARLES II. LAND, a citizen of the United States, residing at Detroit, county of Vayne, State of Michigan, have invented a certain new and useful Improvement in a Set of Rests forDental-Engine Tools; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyin g drawings, which form a part of this specification.

My invention is designed to provide a set of rests for dental-engine tools of novel utility and construction, which shall be simple and efficient in operation.

To this end myinvention consists of devices having various modifications, forms, and at tachments, so constructed and arranged as to be suitable for the various positions and forms of defective teeth both in the lower and the upper jaw.

I carry out my invention as hereinafter described and claimed, and illustrated in the accompanying drawings, in which- Figure 1 shows a form of device especially applicable to work on the upper jaw as a rest and lip guard, the device being shown in place ready for such use. Fig. 2 is a view .of the same in elevation, showing a lateral supporting-arm in connection therewith. Fig. 3 is a view in perspective showing the various parts of the device embodied in Fig. 2 separated one from another. Fig. at is a vertical longitudinal section on the line at 4, Fig. 2. Fig. 5 illustrates a modification wherein the instrument is especially adapted for use on the lower jaw, the view being in perspective. Fig. 6 is a side elevation of the same. Fig. 7 illustrates another modification adapted for use in work on the lower jaw. Fig. 8 is a view of the same with a lateral supporting arm engaged therewith. Fig. 9 is a reverse view of that shown in Fig. 8. Fig. 10 is a detail view of one of the parts.

The various modifications are here shown in order to clearly indicate how the instrument is especially adapted and designed as a tool rest or support in connection with teeth in a great variety of positions, yet permitting guard, as indicated.

the instrument to be held firmly close to the point of contact on the tooth being treated.

I would have it understood that the device is capable of numerous modifications and arrangements in the carrying out of the principle of my invention.

I will first describe the instrument in Figs. 1 to at, more especially shaped and adapted, as already noted, for use in connection with the upper jaw.

The instrument with all its various modifications is provided with a handle A, provided with a support arranged to have a bearing against a desired tooth in order that the device may be held securely and steadily in a desired position. This support, in the form shown in Figs. 1 to 4, consists of a posterior lug a, made to engage the grinding edge of one of the upper teeth, the tooth simply resting upon the support. Then the device is to be used in connection with the upper jaw, the end of the handle is preferably provided with a fiat head, as shown at a, to rest on the finger of the operator, by which means the operator can readily hold the device firmly in position against the grinding edge of the tooth forming the support for the tool-rest. Upon the upper end of the handle is formed a toolsupporting body or head A, which is preferably curved and shaped to serve as a lip- This portion of the device is preferably formed with a central opening, as at a the sides A and A of which are provided with a series of notches or recesses, (indicated at C63,) in which may be located the engine head-piece B or the cutting portion Z) thereof.

0 denotes a central tool-rest having a sliding engagement upon the handle A, so that it may be raised and lowered as may be required. To this end this rest 0 is provided with an elongated slot 0, through which a setscrew D is engaged into the handle to hold the rest 0 in any given position. The upper end of this rest 0 is provided with a series of recesses or notches, as indicated at c, in which the instrument or point Z) may rest in the operation of the tool upon a given tooth. It will be perceived that the point I) may be rested in any one of the notches or recesses, either in the portions A A or in the sliding rest 0, these notches or recesses thus affording a great variety of positions in which the point I) may be located or rested in operation.

Inasmuch as the portion 0 may be set higher or lower, according as the cavity may be found in the tooth, great facility is afforded thereby in the operation of the dental engme.

E represents a laterally-projecting tool rest or support provided at one end with an elongated slot 6, through which the set-screw D engages this portion of the device upon the handle A. The laterally-projecting portion thereof is provided on its upper edge with a seriesof recesses or notches c to receive the point 1) of the engine. I have shown in Figs. 2 and 3 in full lines a right-hand rest E; but I would have it understood that this attachment may also be made to project to the left hand also, if desired, as indicated at E in dotted lines, Fig. 2, the attachment E being made either right or left hand. A set of instruments would be supplied with both a right and a left hand attachment E. This attachment, it will be seen, is also vertically adjustable upon the handle, so that it may be raised and lowered into any desired position, thus adding a much wider range of use to the device. The portion A keeps the lip out of range of the instrument.

The modifications shown in Figs. 5 to 10,

as above noted, are more especially arranged for use in connection with the lower jaw.

Here we have the same handle A, and in the form shown in Figs. 5 and 6 the portions A A forming the central opening a and provided with the recesses or notches c serving as rests for the point I). Here also, in Figs. 5 ando, we have the central sliding tool-rest C, differing only in shape from the portion C in Figs. 1 to 4:, the upper end being also provided with notches or recesses, as at c, for the point Z) to rest upon. In order to give to the tool-rest a bearing upon the teeth of the lower jaw, instead of providing the handle with the posterior lug a a supporting-lug d is provided, engaged higher up upon the device or upon the upper extremity thereof, to rest upon the cutting edge of the required teeth on the lower jaw. The right and left hand supports E (shown in Figs. 2 and 3) may also be applied to the device illustrated in Figs. 5 and b.

It will be observed that in a tool-rest adapted for use on the upper jaw the supporting body or head A is bent forward from the handle, while in a device adapted for use on the lower jaw said supporting body or head is bent in the opposite direction, the purpose and the utility of the device, however, being identically the same in both cases.

The modifications shown in Figs. 7 to 10 illustrate a somewhat simpler form of the device, the principle and purpose, however, being identically the same. Here the handle A is provided with a tool-support F. In

order that a rest or support for the device may be easily obtained across wide spaces, as where a number of teeth have been extracted, I provide a supporting-arm G, (shown in Fig. 7,) bearing on the bicuspid, said arm having a sliding engagement with the handle A whereby it is capable of desired adjustment. This adjustment is readily efiected by constructing said arms with an elongated slot g and engaging said arm to the handle by a set-screw g. The arm G might be adjusted to rest upon a molar tooth, the intervening teeth being removed, or upon other teeth, as may be desired, whereby the operation of the device is extended. The arm G is preferably curved at its outer extremity, as shown in the drawings. Either a right or left hand support E may be engaged with this modified form of device to still more extend the operation of the device. A valuable feature of this modification is found where certain of the teeth might be sore or tender to the touch. By means of the arm G, it will be seen, the support for the tool-rest may be carried to a substantial or sound tooth, leaving the tender teeth undisturbed, while, at the same time, the tooth being treated is at a distance from that on which the arm G finds a bearing or support. By means of the supports E a suitable support for the point I) may be provided farther aroundthe jaw in either direction, as may be required.

hat I claim as my invention is 1. In a dental tool-rest, the combination of a handle, a rest for the point of a dental engine, and means to support the tool-rest upon a desired tooth, substantially as set forth.

2. In a dental tool-rest, the combination of a handle A provided with a supporting body or head A to support a dental tool, the upper end of said head formed with a projecting lip-guard, substantially as set forth.

3. In a dental tool-rest the combination of a handle, a supporting body orhead A formed with a central opening, and with supporting ,sides A A substantially as set forth.

at. In a dental tool-rest, the combination of a handle, a means of support, and a laterallyprojecting tool-rest E, substantially as set forth.

5. In a dental tool-rest, the combination of a handle, a projecting support arranged to have a bearing against a desired tooth, and an adjustable tool-rest, substantially as set forth.

6. In a dental tool-rest, the combination of a handle, a means of support, and an adj ustable laterally-projectin g tool-rest E, substantially as set forth.

In testimony whereof I sign this specification in the presence of two witnesses.

CHARLES H. LAND. Vitnesses:

O. B. BAENZIGER, M. A. MARTIN.

ICC 

